In washing type plate and frame filter press, the ratio of washing rate to the final filtrate rate is__________________?
Correct answer: C. 1/4
- A. 4
- B. 1
- C. 1/4
- D. 1/2
Explanation
In a plate-and-frame press, washing is slower because the wash liquid passes through the deposited cake under less favorable flow conditions, giving a wash rate about one-fourth of the final filtrate rate. Hence the ratio is 1/4.
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